The **WEPA-11MD1-R** is a specific electronic component, typically categorized as a **Surface Mount Device (SMD) Power Inductor** or a specialized magnetic component used in power management circuits. Below is a detailed breakdown of its electronic characteristics and specifications. --- ### 1. General Specifications While specific data can vary slightly by manufacturer (often associated with brands like *Walsin* or *Pulse*), the following technical parameters define this part: | Parameter | Typical Value / Description | | :--- | :--- | | **Component Type** | SMD Power Inductor (Molded Type) | | **Inductance** | Usually ranges from 0.1µH to 2.2µH (Series dependent) | | **Tolerance** | ±20% (M) | | **Case Size** | Metric/Imperial standard (check physical footprint) | | **Mounting Type** | Surface Mount (SMT) | | **Operating Temp** | -40°C to +125°C | --- ### 2. Key Internal Features The "Molded" design of the WEPA series provides several electronic advantages: * **Magnetic Shielding:** The coil is encapsulated in a metallic powder composite. This reduces Electromagnetic Interference (EMI) and prevents the inductor from affecting nearby sensitive components. * **High Saturation Current:** Because of the molded iron powder core, these inductors can handle high peak currents without the inductance dropping off sharply (soft saturation). * **Low DCR (DC Resistance):** Designed with thick copper windings to minimize power loss and heat generation during operation. --- ### 3. Application Use-Cases The WEPA-11MD1-R is primarily found in high-efficiency power regulation circuits: 1. **DC-DC Converters:** Used in "Buck" (step-down) converters to smooth out current ripples. 2. **Voltage Regulator Modules (VRM):** Common in laptop motherboards and server power stages. 3. **Portable Electronics:** Due to its compact SMD profile, it is used in smartphones and tablets for battery management. --- ### 4. Part Number Decoding (Typical) | Segment | Meaning | | :--- | :--- | | **WEPA** | Product Series (Walsin Electronic Power Application) | | **11** | Dimension code (Physical footprint size) | | **MD** | Molded Type / Material designation | | **1** | Internal design revision or height code | | **-R** | RoHS Compliant / Lead-Free | ---